Ajax DoorProtect - wireless door contacts

Ajax DoorProtect vs. DoorProtect Plus: Which Wireless Opening Detector is Right for You?

What is a Door Contact?

Door contacts are usually sensors that let a system know whether a door is opened or closed by means of a reed switch which is an electrical switch operated by a magnetic field..

As a homeowner, keeping your family and property safe is a top priority. Ajax DoorProtect and DoorProtect Plus are both effective wireless solutions for securing your doors and windows. While they share similarities, such as their hi-end reed switches and wireless operation, there are some key differences to consider when deciding which device is right for your home security needs.

Feature DoorProtect Plus DoorProtect
Combined detector Yes No
Suitable for installation Indoors Indoors
Activation threshold Small Magnet - 1 cm Small Magnet - 1 cm
Maximum range Up to 1200m Up to 1200m
Operating frequencies 868.0 - 868.6 MHz 868.0 - 868.6 MHz
Power supply CR123A battery CR123A battery
Battery life Up to 5 - 7 years Up to 5 - 7 years
Dimensions Diameter - 20 mm, Height - 90 mm Diameter - 20 mm, Height - 90 mm

Key Features:

Range and Communication Protocol

The Ajax DoorProtect operates within the wireless Ajax security system and has a communication range of up to 1,200 meters in a line of sight. It uses the Ajax protocol called "Jeweller radio" protocol to ensure secure communication between the device and the hub which has been tried and tested in Europe.

On the other hand, Ajax DoorProtect Plus has the same range and protocol but also includes an accelerometer that registers changes in vertical slope angle, bangs, or vibration, sending an alarm to the hub. This feature is particularly useful for securing roof windows or windows that can be left open for ventilation.

Installation and Compatibility

Both Ajax DoorProtect and DoorProtect Plus are easy to install on all types of doors, including metal doors. They are also compatible with third-party security systems, using the uartBridge or ocBridge Plus integration modules.

What is the difference between DoorProtect and DoorProtect Plus?

Ajax DoorProtect Plus

This device provides protection for windows even when they are left open for ventilation. It uses an accelerometer to detect changes in the vertical slope angle, as well as any bumps or vibrations, and sends an alarm to the hub when triggered.

Ajax DoorProtect

The device consists of two modules ‚ÄĒ detector and magnet. The set includes two magnets: the big magnet is installed at a distance of up to 2 cm, and the small magnet up to 1 cm.¬†

The device detects the door or window being opened by means of British-made hi-end reed switches on which the magnetic field acts. 

The DoorProtect offers a more traditional approach to magnetic door contacts while the DoorProtect Plus has a built in accelerometer that registers slight changes in the vertical slope angles, bangs or vibration from windows or doors.


Ajax DoorProtect With an opening door

How to install Ajax DoorProtect?

 Open the Ajax App If your account has access to more than one hub or if you are using the PRO app, select the hub, to which you want to add the detector.

  1. Go to the Devices  tab and click Add device.
  2. Set the name of the detector, scan or type in the QR code (located on the detector enclosure and package), and select the room and group (if the GROUP MODE is enabled).
  3. Press Add ‚ÄĒ a countdown will start.
  4. Turn on the device.

 Learn more information from the downloads listed below.

 Ajax DoorProtect Installation Manuals 

How Long does battery last for Ajax DoorProtect?

There are many factors that impact battery life for the Ajax DoorProtect which  may vary depending on how often said door gets used on a normal day, but it typically lasts 5 - 7 years.

This is due to the low-power consumption of the device and the use of high-quality batteries. If needed the Ajax DoorProtects batteries can easily be replaced once app has notified user of low battery levels.

Image of a person replacing the battery of an Ajax DoorProtect device at home for easy DIY options

Useful Information on the Ajax DoorProtect Plus

Detecting elements

1 √ó Accelerometer
1 ×  Magnetic reed switch

The magnet should be installed to the right of the detector or on the frame.

Maximum number of openings

up to 2,000,000

For each reed switch.

Additional detector connection

Third-party wired detector with the NC (normally closed) contact type.

Shock sensitivity

3  Adjustable levels

Adjusted by a PRO or user with admin rights in the Ajax app.

Option to ignore single shock

Adjusted by a PRO or user with admin rights in the Ajax app.

Tilt sensor activation threshold

from 5¬į to 25¬į

Adjusted by a PRO or user with admin rights in the Ajax app.

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